Valve



7, 1933- R. w. LEACH ET AL- 1,896,778

- VALVE Filed Oct. 17, 1930 hrI Patented Feb. 7, 1933 PATEN o -FIc ROBERT wrnnmmrmca AND lfiTII EIAM nnnnY B i'rEMAn, or" NEWPORT, Enchant VALVE Application filed October 17, 1930, Serial l 'o. 489,400, and in GreatBritaiii August 20, 1930,

This invention relates to valves with particular reference to sliding plate or rotary disc type valves. i

The object of the: present invention is to provide improved means for lubricatingthe moving parts of such valves, and also to facilitate their operation particularly when, as may frequently occur during long periods of dis-use, the plate or disc becomes rusted or corroded on its seat.

The invention consists in a 7 type referred to in which the plate or disc is under the control of a yielding or resilient member or medium and is associated with means whereby lubricant under pressure may be made to act upon the plate or disc in opposition to such resilient member.

The invention also consists in a valve of the above character in which the pressure of the lubricant is subject to control by means of a piston actuated by spring or fluid pressure or both or by other convenient means.

Further features of the invention will be apparent from the description given hereafter. 7 r a The accompanying drawing illustrates in section a valve constructed in accordance with this invention.

In the application of our invention, as

" the body of two parts I), 0, suitably fastened together to make a fluid tight joint, one part containing the inlet port 61 while the other part contains the outlet port 6, the disc valve being formed with one or more segmental or other openings f for controlling'the connection between theports either or both of which may be of kidney or other suitable shape. The disc is mounted for rotation upon a central stud g secured to the outlet body, and is held in, contact with the body face h by spring or other suitable elastic means. For example, a spring 6 may be arranged in a recess in the boss or central part of the disc and held in place by a washer '9' upon the stud which washer is secured by meansof a nutla over which, if necessary or desirable, wemay arrange a cap I which may be secured to the disc to protect the pivot and spring. j a

valve of the "A resilient packing ring m may bearranged in that face of the disc whicliis adj a cent to the-inlet body and may co-operate with an annular seating at upon'said body part for the purpose of excluding sediment' or deposits from entering-betweenithe disc and inlet casing. -'-In-an annular-recess 0 upon the other face, of the disc we arrange a bevel wheel or circular. rack p; this recess'being in communication with a lubricant reservoir' g and normally full oflu'bricantl F a v The bevel wheel or" circular rack or adapted to contain a supply of viscous lubri other 'gearmernber co operates with apinion r or other drive member; keyed upon an operat-f ing spindles which is mountedin the outlet cant, and the axial bore (may haVe-onefor I more radial" passages "w assocated therewith so that by'means-ofa screw orother-preS sure device the lubricant may be forced into the reservoir 9 and the annular recess 0 above referred to; the chamber 9 whichfis formed on-the outlet body contains a piston 3 'actuated by spring a 'or fluid pressure or-botli, as indicated 'bythe pipe 3 leading from. the

intake side of the valve toth'e-chamber, and y is held place by a'piston cap 2or otherwise The arangement is such that the pressure o'f the lubricant can be increasedbyf means of the screwza untilit can overcome the sprlng 2', the cohesion between 'thedisc' and itsseating, and'the fluid pressure acting Having thus described our invention hat" desire: to secure Let-K we claim as new and t'ers Patent iszfi i v 1; In a valve; ofthe characterdescribe d,

the combinationwith 'ayvalve casingprovifded with a valveseat', a rotary valvedisc coop; crating withzsaid valve-seat, resilientme'ans for 'holdi-ngth e'valve disc on its seat-,1 an an annular groovein the disc. I 1 3, In-a valve of-the character described, a

nular groove provided in the working face of the valve disc and disposed toward the valve seat, said groove forming a recess for a lubricating fluid, a toothed rack located in the groove, the valve casing having a recess for the reception of lubricating fluid, a

pinion located in the recess for engaging the rack, and means for applying pressure to the lubricating fluid.

2. In a valve of the character described, a valve casing provided "with avalve i seat, a rotary disc cooperating with said seat, a

spring for holding the disc against its seat, i an annular groove in theface of the disc which abuts against the seat, a toothed rack located within said groove, a recess in the casing-for containing lubricant, a pinion lo-k cated in said casing recess and engaging with the rack, means ror supplying lubricant to ber in the valve casing enclosing the valverotating means and communicating with the groove inthe valve face, means for supplying signed our said casing recess under pressure, and pressure means operatlve uponthe lubrlcantvin the casing recess to force the same into the valve casing provided with a valveseat, a

rotary disc cooperating Withsaid seat, s spring means for holding thedisc against its seat, an annular groove in the disc facing theseat, a toothed rack located in said annular groove, a recess located in thecasing 'for containing lubricant, said recess communicating withthe groove, a pinionlocated in said/recess and engaging with the rack,

means-for supplying lubricant to said recess under pressure, and pressure means consisting of a spring press'ed piston operative up- I on the lubricant in the recess to force the lubricant into the'annular groove in the disc. 4. Ina valve of the character described,a

,valve'casingprovided with a seat, a rotary disc in .saidcasing cooperating with said seat, said disc having a grooved working face,

a tooth-ed rack in saidjgroo'v'e, a recessin the casing, a pinion loca'tedgin said recess, a

spindle on which said pinion is mounted, said spindlebeing provided withan axialbore -'throughwhich lubricant, is fed to the casing recess, and a spring-pressed piston for force ing lubricant fed by way of the spindle, to:

ward thesgroove int the disc. j 5.,In avalve of thecharacter described, a valve casing having a seat, a rotary disc cooperating with said seat and provided with a grooved working face, means operative in the groove for rotating the disc, a lubricantholding Ch mb r n s gt scr at n means and communicating withthe grooved I face of the disc and means forisupplying lubricant under pressure to'the chamben 6, In 'a valve of the character f described, a valve casingv having a seat, a rotary valve :member: cooperating with said seat 'andi pro-v entering into the groove in the valve face'for rotatingthe valve, a lubri'canmholding chain vided with a grooved'working face, means 

